Analysis of 3-D locations of all strands in CIC conductor

D. Miyagi, S. Teshima, S. Nakazawa, D. Arai, M. Tsuda, T. Hamajima, T. Yagai, N. Koizumi, Y. Nunoya, K. Takahata, T. Obana

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In order to investigate superconducting properties such as long decay time constants, current imbalances and critical current degradations, we need detailed information about all strand locations in the cable-in-conduit conductor (CICC), and hence we develop a new estimation method to obtain all strand locations. It is very difficult to estimate all strand positions because all strands in the real CICC are squeezed into the conduit and are not regularly arranged but displaced. In order to estimate these strand displacements due to the compression, we introduce mechanical potential energy among strands, and hence we search the minimum energy locations which should be realized in the conductor. In order to calculate this process, we perturb all strands from the original locations and continue these processes by using a genetic algorithm until the potential energy is minimized. This analytical method is very useful to simulate all strand positions and allows us to investigate all the electromagnetic phenomena in the CICCs.

Original languageEnglish
Article number4802104
JournalIEEE Transactions on Applied Superconductivity
Volume22
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • Cable-in-conduit conductor
  • contact length
  • loop length
  • strand displacement
  • strand positions
  • twist deformation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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